RASALGETHI (Alpha Herculis). Just to the west of the bright star Vega lies the constellation Hercules, which commemorates the great and strong mythological Greek hero.
Rasalgethi is a multiple star system. The companion Rasalgethi B is itself a binary star. The B star revolves at a distance of 4.8 arc sec from A, that is, about 570 AU with a period of 3600 years.
RASALGETHI (Alpha 1 Her)
Kornephoros (Beta Her)
Sarin (Delta Her)
Marfik (Kappa Her)
Maasym (Lambda Her)
Kajam (Omega Her) ...
Named Stars: RASALGETHI (Alpha 1 Her) Kornephoros (Beta Her) Sarin (Delta Her) Marfik (Kappa Her) Maasym (Lambda Her) Kajam (Omega Her) ...
Alpha Herculis, a red giant star that varies from third to fourth magnitude, is called Rasalgethi, from the Arabic meaning ‘the kneeler's head'.
Even though Hercules is the fifth largest constellation in the sky, it does not abound in bright stars. [4128] alpha Herculis, also known as Rasalgethi ("the kneeler's head"), ...
It is dim, but may be detected by the unaided eye on a very clear night.
Stars
:Stars with proper names: :* (α Her) Ras Algethi [Rasalgethi, Rasalegti] (64/α1 Her) + 64/α2 Her - double 2.78, 5.
al Jathiyah (ι Her), Kajam (ω Her), Kornephoros (β Her), Marfik (κ Her), Maasym (λ Her), Rukbalgethi Genubi (θ Her), Ruticulus (ζ Her), Rasalgethi (α1 Her), Sarin (δ Her), Sofian (η Her).
 See also: Hercules, Star, Constellation, Magnitude, Giant
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